Sauer S 1800

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Sauer S 1800
Type Horizontally opposed piston engine
National origin Germany
Manufacturer Sauer Flugmotorenbau GmbH
Major applications Motorgliders and VLA
Unit cost From €11.574,00 in 2014
Developed from Volkswagen air-cooled engine

The Sauer S 1800 is a family of German four-stroke aircraft engines, certified according to JAR 22-H (CS-22 subpart H)[1][2]

Design and development[edit]

The engine is based on the Volkswagen air-cooled engine, extensively modified for aircraft use and all the parts are custom made.[1] They are certified according to CS-22 subpart H[2][3] and can therefore be used in motorgliders and light aircraft that are certified as CS-VLA[4] and CS-LSA[5]


Sauer S 1800-1-ES1
Sauer S 1800-1-ES1C
Sauer S 1800-1-RS1



General characteristics

  • Bore: 90mm
  • Stroke: 69mm
  • Displacement: 1754cc
  • Dry weight: 63 kg


  • Valvetrain: Single overhead exhaust valve, single overhead inlet valve per cylinder
  • Fuel system: Bing carburetor with altitude compensation
  • Fuel type: min 95 RON
  • Cooling system: Air-cooled


See also[edit]


  1. ^ a b [1], Sauer Flugmotorenbau GmbH
  2. ^ a b CS-22, CS-22
  3. ^ LBA 4590, LBA
  4. ^ CS-VLA, CS-VLA
  5. ^ CS-LSA, CS-LSA
  6. ^ AMS Carat, AMS Carat.

External links[edit]